44 deals reach St Martin's (TR25). The cheapest fixed-line deal is £18.50 a month with Onestream.
Last updated 28 October 2026•10 providers•44 deals•
In short
10 providers, including Sky and BT, offer 44 broadband deals, checked . 39 are on a line, 2 by 5G or 4G and 3 by satellite, and the fastest is Starlink at 400 Mbps. Typical measured speed is 54 Mbps down, 47% below the UK download average.
Deals for St Martin's (TR25), checked and refreshed daily.
Cheapest broadband deal in St Martin's (TR25)
The cheapest deal in St Martin's (TR25) is Fibre 40 from Onestream at £18.50 a month for 40 Mbps. POP Telecom is essentially level at £22.50 a month. Well below the UK average, which shows on a busy evening.
Broadband in St Martin's (TR25): the local picture
Gigabit, compared
Gigabit broadband reaches 0% of premises here, lower than in 98% of postcode districts across the UK.
Source: Ofcom Connected Nations, data to January 2026.
Is your broadband good enough?
The typical St Martin's (TR25) line runs 54 Mbps.
Working from home
Multiple devices at onceShould cope
13 Mbps average upload (UK average upload: 27 Mbps).
Streaming and family use
OK
4K Netflix/YouTube screens2+ at once
Download a film (5GB)~12 min
Household of 4 to 5 peopleShould be fine
Where these figures come from: Ofcom Connected Nations, data to January 2026.
What speeds are people actually getting?
Gigabit reaches 0% of St Martin's (TR25). The full split by band is below.
30 to 300Mbps (Superfast)76%
10 to 30Mbps (Standard)22%
Under 10Mbps (Below decent)2%
Where these figures come from: Ofcom Connected Nations, data to January 2026.
What broadband coverage does St Martin's (TR25) have?
Superfast broadband reaches 100% of St Martin's (TR25) premises but gigabit only 0%, so around 100% of homes can get fast broadband but not the fastest.
0.0%
below decent broadband
Every premises in St Martin's (TR25) meets the minimum broadband standard, better than the UK average of 0.4%.
MetricSt Martin's (TR25)UK AvgDiff
Superfast (30Mbps+)100.0%94.6%+5.7%
Ultrafast (100Mbps+)0.0%81.0%-100.0%
Ultrafast (300 Mbps+)0.0%82.6%-100.0%
Gigabit-capable0.0%80.1%-100.0%
Below decent broadband0.0%0.4%Better
Where these figures come from: Ofcom Connected Nations, data to January 2026. See how every UK region compares in The State of UK Broadband.
How St Martin's (TR25) compares within Isles of Scilly
Across 5 postcode districts in Isles of Scilly, by connection count, typical speed and gigabit coverage.
What broadband speed can I get in St Martin's (TR25)?
St Martin's (TR25) is below the UK average on typical speed, at 54 Mbps. Faster options can reach a street before the local figures show it, so look at what your address can get now.
Can I get fibre broadband in St Martin's (TR25)?
Most premises in St Martin's (TR25) can get superfast broadband (30 Mbps or more), but gigabit coverage is only 0% so far. New fibre networks and government-funded schemes can arrive with little notice, so it is worth checking again every so often.
What is the cheapest broadband in St Martin's (TR25)?
Right now the cheapest deal in St Martin's (TR25) is Fibre 40 from Onestream at £18.50 a month. It runs on part-fibre at 40 Mbps. Whether you can get it depends on the networks that reach your address.
Why is my broadband slow in St Martin's (TR25)?
You may be on an older deal that newer packages have overtaken, with the typical speed in St Martin's (TR25) at 54 Mbps. It is also worth checking you are getting the speed you pay for.
What upload speed can I get in St Martin's (TR25)?
Upload speeds in St Martin's (TR25) average around 13 Mbps. A full-fibre (FTTP) connection delivers the best upload performance.
Is 5G home broadband available in St Martin's (TR25)?
Outdoor 5G covers 95% of premises in St Martin's (TR25), so a 5G hub is a real choice here. The hub plugs in, connects to the mobile network and gives you broadband without an engineer visit. Where fibre is patchy, this can be a useful option.
What is the best broadband for working from home in St Martin's (TR25)?
Upload matters for remote work. St Martin's (TR25) averages 13 Mbps. A full-fibre (FTTP) connection delivers the best upload performance. A package with 100 Mbps download plus 30 Mbps upload handles video calls, cloud backups and large file shares comfortably.
